Фeffective but rough

I find this product effective and have already noticed improvement with my hair and nails since starting it five weeks ago: significant reduction in hair loss, the hair has become less brittle and more manageable when blow drying, nails are getting stronger and the luster has improved. The only reason I gave it 3 stars is because it is so difficult to swallow due to a rough surface. I have since recommended it to my colleague and she seems to be happy as well.